在jdoctor项目的样例代码中，ProblemBuilder是如何构建错误的？

一个好的错误信息主要包含三个部分：Context（上下文），说明什么导致了错误以及发生错误时代码想做什么；The error itself（错误本身），即具体的原因和当时的数据；Mitigation（缓解措施），提供解决方案来克服这个错误。

ProblemBuilder.newBuilder(TestProblemId.ERROR1, StandardSeverity.ERROR, "Hawaiian pizza")  
             .withLongDescription("Pineapple on pizza would put your relationship with folks you respect at risk.")  
             .withShortDescription("pineapple on pizza isn't allowed")  
             .because("the Italian cuisine should be respected")  
             .documentedAt("https://www.bbc.co.uk/bitesize/articles/z2vftrd")  
             .addSolution(s -> s.withShortDescription("eat pineapple for desert"))  
             .addSolution(s -> s.withShortDescription("stop adding pineapple to pizza"));